The microstructure of spontaneously ordered GaInP[sub 2] alloy

Conference · Thu Jun 30 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7256367

Sinha, K; Mascarenhas, A; Alonso, R G; Horner, G S; Bertness, K A; Kurtz, S R; Olson, J M ^[1]

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1. National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, Colorado 80401 (United States)

Polarized photoluminescence, photoluminescence excitation, piezomodulated reflectivity, and resonance Raman techniques have been employed to probe the electronic structure of GaInP[sub 2] alloys exhibiting Cu--Pt ordering. The ordering induced band gap reduction and the crystal field splitting of the valence bands have been studied for samples exhibiting various degrees of ordering. Our studies provide evidence for a distribution of order parameters in spontaneously ordered GaInP[sub 2], in contrast to earlier works, which assume that uniformly ordered domains are embedded in a perfectly disordered matrix. Furthermore, the band gap reduction and the crystal field splitting obtained from our experiments are in good agreement with a theoretical model relating these quantities to the long range order parameter in the sample.

• OSTI ID: 7256367
• Report Number(s): CONF-9310273--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 306:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360606 -- Other Materials-- Physical Properties-- (1992-)
ALLOY SYSTEMS
CRYSTAL FIELD
ELECTRONIC STRUCTURE
ENERGY GAP
GALLIUM COMPOUNDS
GALLIUM PHOSPHIDES
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
LUMINESCENCE
MICROSTRUCTURE
OPTICAL PROPERTIES
ORDER-DISORDER TRANSFORMATIONS
PHASE TRANSFORMATIONS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PHOTOLUMINESCENCE
PHYSICAL PROPERTIES
PNICTIDES
RAMAN SPECTRA
REFLECTIVITY
SPECTRA
SURFACE PROPERTIES
TERNARY ALLOY SYSTEMS